The ALG Defense Ergonomic Modular Rail (EMR) V1 M-LOK free float hand guard was designed to be a lightweight modular rail system that also provides you with Magpul M-LOK attachment points in several locations along the length of the rail. The EMR features an ergonomic design, with a flexible and modular set up procedure. The free floating design is strong and rigid enough to meet even the toughest challenges. Accessory rails are easy to install and do not require a gunsmith. However if you do not have the required tools or mechanical know how you should seek the help of an expert.